Additionally, they are also harmful to dogs including their berries if eaten in large quantities. See below Description. Bad foods. Ingested grayanotoxins can interfere with normal skeletal and nerve functionality as well as hinder the action of the heart muscle. ALL parts (leaves, berries etc.) Your veterinarian may recommend more frequent monitoring of your pet’s blood chemistry levels in the future, particularly in relation to kidney and liver functionality or impairment. Laurel bay leaves are toxic to cats and dogs. Why are they poisonous? The pits of these berries produce cyanide which can cause health problems related to food poisoning. Whether you call them bay leaves, bay laurel, or sweet laurel, this Mediterranean herb is a common ingredient in soups, stews, or braised meats. My only other advice to get more specific details would be to contact the ASPCA Poison Control Hotline with a huge database of information about toxicities. Bearded Dragon Breeding – Mating, Egg Laying and Incubation. Symptoms include diarrhea and vomiting. Laurel bay leaves are toxic to cats and dogs. The bay (Laurus nobilis) is the only 'true' laurel grown widely in this country, although in other parts of the world there are more than 2,500 other species of tree and shrub laurel.. Thank you, Laurel poisoning can be severe in dogs and because Roux didn’t vomit until the next day, we know it is still in his system; if he had vomited within an hour it would be a different story. 8:17 AM . Plant and Fungi Poisons Information. Plant material found in the vomit or stools of the dog will assist in an accurate diagnosis as well. Q: Are bay tree berries poisonous to dogs?